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Finding the Fourth Proportional to 885.40, 1,216.36 and 793.33

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Solution

The fourth proportional to 885.40, 1,216.36 and 793.33 is: 1,089.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.40 : 1,216.36 = 793.33 : x
  2. Step 2: Convert to fraction form
    885.40/1,216.36 = 793.33/x
  3. Step 3: Cross multiply
    885.40x = 1,216.36 × 793.33
  4. Step 4: Simplify right side
    885.40x = 964,974.88
  5. Step 5: Solve for x
    x = 964,974.88/885.40
  6. Step 6: Final answer
    x = 1,089.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.